Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e9fbdd8bbcea42…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 19:30:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: dbb5b7715f4f25a93f98dcbc5bb83ebe SHA-1: 351b8069498ed5e6747177308db37c2d2924d088 SHA-256: d1e9fbdd8bbcea42f223b93cfb6ebda6befc4a2876afb08c5292cd2bfa49544d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free game hacks' and directs users to a URL that is likely malicious. The ML classifier strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a site that may host further malicious content or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/free-roblox-accounts-with-robux-2021-september-game-hack PDF link annotation
    • https://www.tdbaska.hr/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-get-free-robux-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/pubg-uc-hack-online_GM1330123889.pdfIn PDF document text
    • http://www.tdbaska.hr/files/como-hackear-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://www.tdbaska.hr/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-items-that-are-now-expire-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-report-a-hacker-that-hacking-you-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/pokemon-go-free-raid-pass_GM1094591345.pdfIn PDF document text
    • http://www.tdbaska.hr/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/get-robux-now_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7F 21660 bytes
SHA-256: f434dcbdf222e3500762d2657f208cad4ece7199954039940c28a8a96c27fc72
font_01_sfnt_off00005e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E13 20216 bytes
SHA-256: 4601fdcb7b331d7b4c2784c5c8c2650450ec8540e3a1759acdc614281cf76f58

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